The Air Gap Variable Fiber Attenuator 0-30dB from Anfkom Telecom is a Fiber Optic Attenuator with Attenuation 1 to 30 dB, Return Loss >50 to 60 dB, Operating Wavelength 1310 to 1550 nm, Optical Input Power 200 mW. More details for Air Gap Variable Fiber Attenuator 0-30dB can be seen below.